Charles e



C. E. BONNET- STEAM TRAP.

APPLICATION FILED NOV. 25, I916 Patent-ed Nov. 4, 1919.

CHARLES E. BONNET, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO, THE BISI-IGP-BABCOCK-BECKER COMPANY, OF CLEVELAND,

OHIO, A QGRPOBATION OF OHIO.

STEAM-TRAP.

Specification of Letters Patent.

Patented Nov. 4, 1919.

Application filed November 25, 1916. Serial No. 133,356.

To all whom it may concern:

Be it known that 1, CHARLES E. BONNET, a. citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Steam-Traps, of which the following is a specification.

My invention relates to steam traps of the type having an internal valve which is controlled by a thermostatic element in the form of a bent tube having a sensitive liquid sealed within the same, and it consists of an improved structure of simplified form wherein the parts are readily accessible for removal, cleaning or repairs, and in which the valve is mounted in such manner and relation to the other internal parts of the structure that it will be maintained at all times in proper position and alinement under the wrking conditions of the structure.

A further object of my invention is to provide improved connections for the ends of the bent tube; one of said connections cooperating with a fixed socket carried by the wall of the casing, while the connection at the other end of the tube engages asocket in the valve which i controlled and actuated by said bent tube; a further object of my invention is to so dispose the parts with reference to each other that the bent tube, both ends of which are loosely confined in their sockets, will be prevented from becoming displaced during shipment or at any time during the operation of the valve, and

a further object of my invention is to provide for quick and ample discharge of the condensed water at each opening of the valve.

These and other features of my invention are more fully described hereinafter, refer ence being had to the accompanying drawings, in which:

Figure 1, is a vertical section of my improved steam trap, taken on the line II, Fig. 2.

Fig. 2, is a vertical section on the line II-II, Fig. 1.

Fig. 3, is a perspective view of the valve, and

Fig. 4, is a perspective view of the valve guide and valve seat.

The casing 1, which may be in general form an elliptical body, has an inlet opening 2, preferably at the side, an outlet 3, and is closed at the top by a cap 1; the upper portion of the casing being internally threaded for the reception of said cap. By preference, the casing 1 is made of iron, while the cap is made of brass; the coefficient of expansion between these two metals being such that a tight joint will be insured at all times. I

Within the inlet opening, a sleeve 6 hav ing a through bore 7 and a valve seat 8 is tightly fitted; such sleeve having its central aperture or bore 7 adapted to be closed by a valve 9 which engages the seat 8. This valve is carried by a member 10 adapted to slide in an inner extension of said sleeve 6, having preferably a larger diameter than the bore 7'; the sleeve being cut away at 11 adjacent the valve seat above and below the valve for quick drainage of water, and at 12 for the purpose of permitting the connec tion .at one end of the bent tube 13 engaging the valve carrier 10. Externally of the inlet opening 2, a suitable nipple 14 attached to any suitable pipe connection may be secured by means of a bonnet 15, of usual type.

The valve 9 is adjustable in the carrier member 10 for various positions with respect to the seat 8 of the sleeve 6 mounted in the inlet opening, and it may be held in its ad justed positions by a set screw 16. The member 10 is rectangular and may be substantially square in cross section, giving it a four point contact with the inner wall of the sleeve 6, and by having its longitudinal axis .in line with the bore 7 of said sleeve, properly alined movement of the valve to and from its seat is assured.

Within the casing and preferably directly opposite the inlet opening 2, I provide a boss 17 having a socket or seat 18 for one end of the U-shaped tube 13; the other end of said tube fitting a socket 19 in the end of the valve carrying member 10. The tube is provided at its ends with connections for engagement with these sockets which are preferably in the form of stems 20 with rounded bosses 21, facilitating cooperation between the respective parts under the expansion and contraction of the said tube by reason of changes in temperature, and insuring horizontal movement of the valve and its carrier. The ends of the tube 13 are loosely confined in their sockets and may be prevented from dislodgment by providing a boss 22 on the inside of the cap 4 with which the bent per tion of the tube may contact before its ends leave the sockets.

In the use of this structure, the valve opens under reduced temperature occasioned by the presence of condensed Water in the line connected With the inlet 2, and it is of the utmost importance that this Water be taken away as quickly as possible. For this purpose, I preferably slope the lower Wall of the trap as indicated at 28, and particularly between the inlet 2 and the outlet 3, thereby avoiding all danger of pocketing in the chamber of the trap any Water or scale entering the same. Any scale that may be left by the influx of one charge of Water Will be removed by the succeeding Water passing through the trap structure.

By providing a valve carrier such as disclosed, the valve is maintained at all times in proper axial alinement with its seat and in a horizontal position. The connection ofthe bent tube With the valve carrier is substantially a ball and socket joint; the rounded portion of the stem engaging the Wall of the socket in such manner as to insure that there will be no binding upon the valve carrier. Such carrier therefore Will be moved horizontally in the slideway provided by the inner extension of the tubular structure 6, and With the valve in exact axial alinement with the valve seat.

I claim:

1. The combination of a casing having inlet and outlet openings, .a tubular member having bores of tWo diameters fitting the inlet opening and projecting into the chamber of the casing, one of said bores providing a valve seat and the other a slideway, a valve adapted to said seat, a carrier in Which said valve is adjustably mounted adapted to said slideway, said carrier being rectangular and having four-point contact with the slideway and having a socket, a socketed boss carried by the casing, a bent tube of U-shape loosely disposed Within the casing, and projections carried by the ends of said bent tube for engagement With said sockets, said projections comprising stems With spherical bosses for engagement with the Walls of the sockets.

2. The combination, in a. steam trap, of a casing having inlet and outlet openings, a tubular member secured to the casing in said inlet opening and having a portion projecting into the chamber of the casing, said member having a valve seat a valve, a valve carrier slidable in the projecting portion of said tubular member, said valve being adjustable in its carrier, means for holding the valve in its adjusted positions, and a bent tube loosely and detachably mounted Within the casing, said tube having projections With spherical portions at its free ends, one of said projections being adapted to a seat carried by the casing, While the other is adapted to seat in the valve carrier.

CHARLES E. BONNET.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington. D. C. 

